Before the plating of the vehicle, the processing steps are not uniform according to the condition of the paint surface. The treatment in the front of the paint is a very important part. If the treatment is not good, it will affect the adhesion and basic performance of the coated film layer. Please refer to the paint surface condition of the construction vehicle. Judging whether it is necessary to remove iron powder, grinding and polishing, air gun water removal, etc., pay special attention to degreasing is necessary steps before plating construction can not be omitted. Please ensure that after the necessary steps are completed, the paint surface is dry before plating.